The warmest of welcomes back to the sex ed game for Michael Douglas, who this week explained that going down on women gives you cancer. At least, I think that was what it was – Lost in Showbiz felt too nostalgic for Michael's earlier work to read the science bit.

For those of us who recall the medical dark ages of late 80s celebrity, you see, Michael was also the trailblazer on the whole sex addiction thing, with his rehab admission in 1990 widely held to be for the then little-known disease (he has since disputed that reading of his difficulties, and, indeed, seems to have rowed back on the whole oral sex diagnosis). But in popular folklore, Michael Douglas was sex addiction's Patient Zero: before then, the illness was thought to be just one of those underresearched symptoms of conditions like being in a world-famous band, as opposed to the standalone celebrity blight that we now know it is.

So, this latest announcement marks an important return to medical discourse for Michael, and Lost in Showbiz salutes him for it – and really hopes it hasn't contravened all sorts of Guardian guidelines on covering sex addiction sensitively. After all, as Chazz Michael Michaels put it: "It's a real disease, with doctors and medicine and everything".

Michael Douglas linked his throat cancer to contracting a strain of HPV virus through cunnilingus - but was he medically correct to make the causal connection? What is the truth about HPV and how is it linked to cancer? Our webchat discussed the issues